Whisk together all of the dry ingredients for the crust. Then add the melted butter and mix until a dough forms. Take about 1/3 of that and press it down on the bottom of the pan to form the crust. The rest will be sprinkled on top.

For the filling, mix together all of the ingredients and pour over the crust. Sprinkle the rest of the dough on top and bake for about 25 minutes, until the top is golden brown. Let cool completely.